The Dow Jones industrial average logged its first six-day consecutive drop since June 2005 after the price of light, sweet crude
rose sharply on the New York Mercantile Exchange
. U.S. diplomats in Nigeria warned that militants are planning a series of kidnappings and bombing attacks in the coming days in areas where oil is extracted.

The Labor Department said the unemployment rate fell to 4.4 percent last month from 4.6 percent in September, easing some concerns that the economy has slowed too quickly. For more than a week, investors have been nervous about the strength of the economy following a stream of disappointing data. While Wall Street wants growth to cool so the threat of inflation will dissipate and the Federal Reserve can cut interest rates, a precipitous slowdown could slice into consumer spending and corporate profits.

Alan Gayle, senior investment strategist and director of asset allocation for Trusco Capital Management, said the employment figures suggest the economy has more power than expected going into the holiday spending season but warned that the strength could make the Fed uneasy. “Investors have to digest the notion that the Fed is going to remain poised to lift interest rates as we go into 2007.”

The Dow Jones industrial average closed the day down 32.50 points, or 0.27 percent. It was the Dow’s first close under 12,000 since Oct. 19, when it finished above that milestone for the first time ever.

The broader Standard & Poor’s 500-stock index finished Friday down 3.04 points, or 0.22 percent, while the Nasdaq composite index, full of technology stocks, gave up 3.23 points, or 0.14 percent.

For the week, the Dow fell 0.86 percent, while the S&P lost 0.95 percent and the Nasdaq lost 0.84 percent.

Friday’s economic data sent bonds lower; the yield on the benchmark 10-year Treasury note rose to 4.71 percent from 4.60 percent late Thursday. The dollar was mixed against other currencies.

Though the 92,000 new jobs last month fell short of the 125,000 economists expected, figures for August and September were revised upward. October was the third straight month of decline for the unemployment rate.

The markets showed little reaction to a second dose of good economic news Friday. The Institute for Supply Management, an organization of corporate purchasing executives, said its index of the service sector
rose to 57.1 in October from 52.9 in September
; the reading was stronger than expected.

Last month, investors believing a soft landing was in the offing sent stocks higher; the Dow and other indexes rose more than 3 percent. But this week Wall Street has been casting about as it tries to reconcile its desire for a slowdown with weak economic readings. There was a sense among many investors that perhaps Wall Street was getting too much of what it wanted in the form of weak economic news, while other observers regarded the news as merely turbulence that accompanies even a soft landing in the economy.

“This is what it’s like to live in a data-dependent market,” Gayle said of the reaction to the jobs report. “We may see a near-term correction after a couple of months of strong performance. That’s not be unexpected. Fundamentally, the market seems to be reasonably valued and fundamentally sound.”